Ahmad Safuan, Ahmad Sirhan, and Rosli Ahmad. 2025. “Effect of Yttrium, Holmium and Zirconium on Microstructure and Mechanical Properties of Aluminium LM30 Alloy”. Research Progress in Mechanical and Manufacturing Engineering 6 (1): 36-39. https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/16925.